Tools / Calculators / BMI calculator

BMI calculator.

Body mass index and the healthy weight range for your height. Metric or imperial. Nothing you enter is uploaded.

Your measurements

Adults aged 18 and over.

UNITS

HEIGHT (CM)

WEIGHT (KG)

HEIGHT (FEET)

HEIGHT (INCHES)

WEIGHT (LB)

Your result

Body mass index (BMI) is weight divided by height squared.

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Categories use the WHO adult cut-offs. Many adults of South Asian and other Asian backgrounds face higher health risk at lower BMI, so some guidance uses 23 and 27.5 as cut-offs. Both are shown. BMI does not measure body fat directly, so it is a screening guide, not a diagnosis. Talk to a doctor about your own health.